Neillsville, WI Radon Levels

Q: What EPA Radon Zone is Neillsville in?

Neillsville is in Clark County, EPA Zone 2.

Q: How much does radon mitigation cost in Neillsville?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Check local Neillsville radon levels and find certified testing and mitigation professionals to keep your home safe

Neillsville, WI Radon Facts

EPA Radon Zone Zone 2 — Moderate Risk 2–4 pCi/L (Zone 2)

County Clark County, WI

Zip Code 54456

Situated in Clark County in west-central Wisconsin, Neillsville rests on glacial deposits over Paleozoic sandstone that can contribute to the elevated radon potential common throughout Wisconsin. Testing data remains sparse for zip code 54456, making professional radon assessment particularly valuable for local homeowners.

7.71

pCi/L area average

Above EPA Action Level

Nearby homeowner readings average 7.71 pCi/L, based on 14 tests from 10 nearby cities. No readings have been submitted for Neillsville yet, so the closest recorded data is shown as a benchmark. The EPA recommends taking action at or above 4.0 pCi/L.

4.0 EPA

10+

Neillsville, WI Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

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Radon Readings Near Neillsville, WI

No homeowner tests have been submitted for Neillsville yet. The closest cities with user-submitted radon data are shown below — explore them to gauge local conditions. Radon varies by home, so testing is the only way to know your level.

City	Distance	Avg User Level	Readings
Black River Falls	20.6 mi	9.00 pCi/L	1
Marshfield	22.7 mi	13.50 pCi/L	2
Osseo	29.9 mi	5.00 pCi/L	1
Stratford	31.8 mi	13.00 pCi/L	1
Fall Creek	36.4 mi	8.00 pCi/L	1
Wisconsin Rapids	38.6 mi	4.50 pCi/L	2
Nekoosa	40.5 mi	6.00 pCi/L	1
Sparta	42.4 mi	5.00 pCi/L	2

Clark County Radon Profile

EPA mapping assigns Clark County to Radon Zone 2, indicating moderate predicted indoor screening levels in the 2 to 4 pCi/L range based on regional geology. Direct test data for Clark County remains limited, so the closest neighboring readings are used here to represent the radon conditions homeowners are likely to encounter. As the second leading cause of lung cancer in the U.S., radon warrants testing in every Clark County home regardless of zone or a neighbor's results.

Radon FAQ for Neillsville, WI

What EPA Radon Zone is Neillsville in?

Neillsville and the 54456 zip code are in Clark County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

Why are radon readings shown from areas near Neillsville?

No homeowner radon tests have been submitted for Neillsville yet. Because radon is driven by regional soil and bedrock geology, readings from the closest cities—and the Clark County average—are the best available indicator of local conditions until Neillsville homeowners submit their own results. The EPA still recommends testing every individual home, since levels can vary significantly from house to house.

How much does radon mitigation cost in Neillsville?

Radon mitigation in Neillsville typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Neillsville?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.